Dexter‘s seventh season continues next week with episode 4, “Run,” which will see a situation arise that could put Deb in a place where she better understands what her brother does. But will it?

DexterSeason 7 Episode 4 “Run” Promo

“After capturing a deadly killer, things go awry for Miami Metro, sending Debra into a tailspin. In an effort to help his sister, Dexter enters into a dangerous game of cat and mouse, while the Ukrainian mob continues to seek revenge.”

Things aren’t getting any easier for Dexter and Deb now that she knows his secret, but could that change after this episode? Deb is not going to be happy when it’s the police’s fault that a killer walks, but can Dexter do something about it? It certainly looks that way.

As the Dexter season 7 episode 4 promo for “Run” (below) shows, Deb’s worried about what will happen if Dexter doesn’t stop. Later, he tells her, “everything is in my control,” but is it? Even if that’s the case at the moment, how long can that continue to be true? The judge throws out a confession because of the circumstances in which it was obtained. Speltzer walks, and while there’s nothing the police can do, that’s not true for Dexter. What will this mean for Dexter and Deb?